Free Shipping error

[nkrcs]

I have set up the free shipping module and it shows green now but when I try to purchase the item I get this error message under it

Warning: main(includes/modules//pages/popup_shipping_estimator/jscript_addr_pulldowns.php) [function.main]: failed to open stream: No such file or directory in /home/sites/kankaroogifts.com.au/public_html/kankshop/includes/modules/shipping_estimator.php on line 22

Warning: main(includes/modules//pages/popup_shipping_estimator/jscript_addr_pulldowns.php) [function.main]: failed to open stream: No such file or directory in /home/sites/kankaroogifts.com.au/public_html/kankshop/includes/modules/shipping_estimator.php on line 22

Warning: main(includes/modules//pages/popup_shipping_estimator/jscript_addr_pulldowns.php) [function.main]: failed to open stream: No such file or directory in /home/sites/kankaroogifts.com.au/public_html/kankshop/includes/modules/shipping_estimator.php on line 22

Fatal error: main() [function.require]: Failed opening required 'includes/modules//pages/popup_shipping_estimator/jscript_addr_pulldowns.php' (include_path='.:/usr/share/pear') in /home/sites/kankaroogifts.com.au/public_html/kankshop/includes/modules/shipping_estimator.php on line 22


thanks

http://www.nkrcs.com.au